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Finding the Fourth Proportional to 288,992.80, 433,489.20 and 164,576.80

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Solution

The fourth proportional to 288,992.80, 433,489.20 and 164,576.80 is: 246,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,992.80 : 433,489.20 = 164,576.80 : x
  2. Step 2: Convert to fraction form
    288,992.80/433,489.20 = 164,576.80/x
  3. Step 3: Cross multiply
    288,992.80x = 433,489.20 × 164,576.80
  4. Step 4: Simplify right side
    288,992.80x = 71,342,265,370.56
  5. Step 5: Solve for x
    x = 71,342,265,370.56/288,992.80
  6. Step 6: Final answer
    x = 246,865.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.